Image display apparatus

ABSTRACT

An image display apparatus includes a rollable display; a drive unit configured to roll up or roll down the rollable display; a network interface unit configured to exchange data with at least one mobile terminal; and a controller configured to change a height of the rollable display based on data received from the at least one mobile terminal.

CROSS-REFERENCE TO RELATED APPLICATIONS

This Application is a Continuation of co-pending U.S. patent applicationSer. No. 16/244,443 filed on Jan. 10, 2019, which is a Continuation ofPCT International Application No. PCT/KR2017/009334 filed on Aug. 25,2017, all of which are hereby expressly incorporated by reference intothe present application.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The present invention relates to an image display apparatus, and moreparticularly, to an image display apparatus capable of changing the sizeof a display according to attributes of content to be displayed.

2. Discussion of the Related Art

An image display apparatus is an apparatus for outputting an image. Theimage display apparatus may output an image through a display panel orproject an image to the outside using visible light or the like.

The size of the display of the image display apparatus is graduallyincreasing in accordance with the tendency of the image displayapparatus to become larger and more sophisticated. However, display sizeis proportional to power consumption. In addition, when the imagedisplay apparatus is not in use, the aesthetics thereof becomes lowerdue to the size of the display.

SUMMARY OF THE INVENTION

Therefore, the present invention has been made in view of the aboveproblems, and it is an object of the present invention to provide animage display apparatus capable of changing the size of a displayaccording to the attributes of content.

In accordance with an aspect of the present invention, the above andother objects can be accomplished by the provision of an image displayapparatus including a rollable display, a drive unit to change a size ofthe display, and a controller to control the display, wherein, when acontent display command is input, the controller determines the size ofthe display according to an attribute of content to be displayed, andcontrols the drive unit to roll up or down the display according to thedetermined size.

In accordance with another aspect of the present invention, there isprovided an image display apparatus including a rollable display, adrive unit to change a height of the display, and a controller tocontrol the display, wherein, when a content display command is input,the controller determines the height of the display according to anattribute of content to be displayed, and controls the drive unit toroll up or down the display according to the determined height.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other objects, features and other advantages of thepresent invention will be more clearly understood from the followingdetailed description taken in conjunction with the accompanyingdrawings, in which:

FIGS. 1A to 1D are views showing an image display apparatus having arollable display according to an embodiment of the present invention;

FIG. 2 is an internal block diagram of the image display apparatus ofFIGS. 1A to 1D;

FIG. 3 is an internal block diagram of the controller of FIG. 2;

FIG. 4 illustrates a control method of the remote controller of FIG. 2;

FIG. 5 is an internal block diagram of the remote controller of FIG. 2;

FIG. 6 is a flowchart illustrating an operation method of an imagedisplay apparatus having a rollable display according to an embodimentof the present invention; and

FIGS. 7A to 16D are views referred to in the description of theoperation method of FIG. 6.

DETAILED DESCRIPTION OF THE EMBODIMENTS

Reference will now be made in detail to the preferred embodiments of thepresent invention, examples of which are illustrated in the accompanyingdrawings. Wherever possible, the same reference numbers will be usedthroughout the drawings to refer to the same or like parts.

As used herein, the suffixes “module” and “unit” are added simply tofacilitate preparation of this specification and are not intended tosuggest special meanings or functions. Therefore, the suffixes “module”and “unit” may be used interchangeably.

FIGS. 1A to 1D are views showing an image display apparatus having arollable display according to an embodiment of the present invention.Referring to FIGS. 1A to 1D, an image display apparatus 100 according toan embodiment of the present invention may include a display 180 and asignal processing device 300.

An opening 15 may be formed in the signal processing device 300 and therollable display 180 may be rolled up through the opening 15 fordisplay. To this end, the signal processing device 300 may include adrive unit (175 in FIG. 2) for driving the rollable display 180. In thiscase, the drive unit (175 in FIG. 2) may include a roller (not shown) onwhich the rollable display 180 is wound and a motor (not shown) forrotating the roller.

First, FIG. 1A illustrates that the rollable display 180 is wound in thesignal processing device 300 and is not exposed to the outside of theopening 15. At this time, the signal processing device 300 is in astand-by mode, in which only some of the units may operate, and powermay not be supplied to the display 180.

Next, FIG. 1B illustrates that the rollable display 180 is rolled up bythe operation of the drive unit (175 in FIG. 2) such that the rollabledisplay 180 has a height of h1 exposed to the outside of the opening 15.Next, FIG. 1C illustrates that the rollable display 180 is rolled up bythe operation of the drive unit (175 in FIG. 2) such that the height ofthe rollable display 180 is h2. Next, FIG. 1D illustrates that therollable display 180 is rolled up by the operation of the drive unit(175 in FIG. 2) such that the height of the rollable display 180 is h3.

The image display apparatus 100 according to an embodiment of thepresent invention includes a rollable display 180, a drive unit 175 forchanging the size of the display 180, and a controller 170 forcontrolling the display 180. When a content display command is input,the controller 170 determines the size of the display 180 according toan attribute of the content to be displayed and controls the drive unit175 to roll the display 180 up or down according to the determined size.

Accordingly, the size of the display 180 may be changed according to theattribute of the content. In addition, unnecessary power may be reducedby changing the size of the display 180 according to the attribute ofthe content. As a result, power consumption may be reduced.

According to another embodiment of the present invention, the imagedisplay apparatus 100 includes a rollable display 180, a drive unit 175for changing the height of the display 180, and a controller 170 forcontrolling the display 180. When a content display command is input,the controller 180 determines the height of the display 180 according toan attribute of the content to be displayed and controls the drive unit175 to roll the display 180 up or down according to the determinedheight. Accordingly, the size of the display 180 may be changedaccording to the attribute of the content.

Meanwhile, the rollable display 180 may be a flexible display, andinclude an organic light emitting diode panel (OLED panel). The OLEDpanel may include a plurality of scan lines and a plurality of datalines, and pixels each including a sub-pixel may be defined at theintersection between each scan line and each data line.

The pixel circuit of the OLED panel may include a switching transistorSW1, a storage capacitor Cst, a driving transistor SW2, and an organiclight emitting diode (OLED) layer. The switching transistor SW1 has agate terminal connected with a scan line and turned on according to aninput scan signal Vdscan. When turned on, the switching transistor SW1transmits an input data signal Vdata to the gate terminal of the drivingtransistor SW2 or one end of the storage capacitor Cst.

The storage capacitor Cst is formed between the gate terminal and thesource terminal of the driving transistor SW2 and stores a predetermineddifference between the level of the data signal transmitted to one endof the storage capacitor Cst and the level of DC power VDD transmittedto the other end of the storage capacitor Cst. For example, when thedata signals have different levels according to the pulse amplitudemodulation (PAM) scheme, the power level to be stored in the storagecapacitor Cst depends on the level difference of the data signal Vdata.

As another example, when the data signals have different pulse widthsaccording to the pulse width modulation (PWM) scheme, the power level tobe stored in the storage capacitor Cst depends on the pulse widthdifference of the data signal Vdata. The driving transistor SW2 isturned on according to the level of power stored in the storagecapacitor Cst. When the driving transistor SW2 is turned on, the drivingcurrent IOLED, which is proportional to the level of stored power, flowsto the OLED layer. Accordingly, the OLED layer performs the lightemitting operation.

The OLED layer may include a light emitting layer (EML) of RGBWcorresponding to a subpixel. The organic light emitting layer (OLED) mayinclude at least one of a hole injection layer (HIL), a hole transportlayer (HTL), an electron transport layer (ETL), and an electroninjection layer (EIL) and may also include a hole blocking layer. In theorganic light emitting layer (OLED), all subpixels emit white light. Inthe case of green, red, and blue subpixels, however, a separate colorfilter is provided to implement colors. That is, when the green, red,and blue subpixels are provided, green, red, and blue color filters arefurther provided. For the white subpixel, since white light is output, aseparate color filter is not required.

The signal processing device 300 may include a speaker unit 185 acapable of outputting sound in a front direction. In the figure, it isillustrated that speakers SFa and SFb belonging to the speaker unit 185a are arranged in the front direction of the signal processing device300. Accordingly, the sound output from the speaker unit 185 a isemitted toward the user, and reaches the user.

The image display apparatus 100 of FIGS. 1A to 1D may be a monitor, aTV, a tablet, a mobile terminal, or the like. FIG. 2 is an internalblock diagram of the image display apparatus of FIGS. 1A to 1D.Referring to FIG. 2, the image display apparatus 100 according to anembodiment of the present invention may include a display 180 and asignal processing device 300.

The signal processing device 300 includes a tuner 110, a demodulator120, an external device interface unit 130, a network interface unit135, a memory 140, a user input interface unit 150, a sensor unit (notshown), a controller 170, an audio output unit 185, and a drive unit175. While it is illustrated in the figure that the tuner 110, thedemodulator 120, the external device interface unit 130, and the networkinterface unit 135 are provided in a broadcast receiver 105, variousvariations can be made.

The tuner 110 selects a radio frequency (RF) broadcast signalcorresponding to a channel selected by the user or all pre-storedchannels among RF broadcast signals received through the antenna 50. Inaddition, the tuner 110 converts the selected RF broadcast signal intoan intermediate frequency signal, a baseband image, or a voice signal.For example, if the selected RF broadcast signal is a digital broadcastsignal, the signal is converted into a digital IF signal (DIF). If theselected RF broadcast signal is an analog broadcast signal, the signalis converted into an analog baseband image or voice signal (CVBS/SIF).That is, the tuner 110 may process a digital broadcasting signal or ananalog broadcasting signal. The analog baseband image or voice signal(CVBS/SIF) output from the tuner 110 may be directly input to thecontroller 170.

Meanwhile, in the present invention, the tuner 110 may sequentiallyselect RF broadcast signals of all broadcast channels stored by achannel memorization function among the RF broadcast signals receivedthrough the antenna, and convert the same into intermediate frequencysignals, baseband images, or voice signals. To receive broadcast signalsof a plurality of channels, a plurality of tuners 110 may be provided.Alternatively, a single tuner to receive a plurality of channelssimultaneously may be provided.

The demodulator 120 receives the digital IF signal DIF converted by thetuner 110 and performs a demodulation operation. After performingdemodulation and channel decoding, the demodulator 120 may output astream signal TS. Herein, the stream signal may be a signal obtained bymultiplexing an image signal, voice signal or data signal.

The stream signal output from the demodulator 120 may be input to thecontroller 170. After performing demultiplexing and image/voice signalprocessing, the controller 170 outputs an image to the display 180 and avoice to the audio output unit 185. The external device interface unit130 may transmit or receive data to or from a connected external device190. To this end, the external device interface unit 130 may include anA/V input/output unit (not shown) or a wireless communication unit.

The external device interface unit 130 may be connected to externaldevices such as a DVD (digital versatile disc) player, a Blu-ray player,a gaming device, a camera, a camcorder, a computer (laptop), and aset-top box in a wired/wireless manner, and perform input/outputoperations with external devices. The A/V input/output unit may receiveimage and voice signals input from an external device. Meanwhile, thewireless communication unit may perform short-range wirelesscommunication with other electronic devices.

The network interface unit 135 provides an interface for connection witha wired/wireless network including the Internet. For example, thenetwork interface unit 135 may receive content or data provided by acontent provider or a network operator over a network.

The memory 140 may store programs for processing and control of signalsin the controller 170, and also store a signal-processed image, voicesignal or data signal. The memory 140 may also function to temporarilystore an image signal, a voice signal or a data signal input through theexternal device interface unit 130. In addition, the memory 140 maystore information about a predetermined broadcast channel through thechannel memorization function such as a channel map.

While it is illustrated in FIG. 2 that the memory 140 is providedseparately from the controller 170, embodiments of the present inventionare not limited thereto. The memory 140 may be provided in thecontroller 170.

The user input interface unit 150 may transmit a signal input by theuser to the controller 170 or transmit a signal from the controller 170to the user. For example, the user input interface unit 150 maytransmit/receive user input signals such as power on/off, channelselection, and screen window setting to/from the remote controller 200,deliver, to the controller 170, user input signals input through localkeys (not shown) such as a power key, a channel key, a volume key, or asetting key, deliver, to the controller 170, user input signals inputthrough a sensor unit (not shown) configured to sense user gestures, ortransmit a signal from the controller 170 to the sensor unit (notshown).

The control unit 170 may demultiplex the input stream or process thedemultiplexed signals through the tuner 110, the demodulator 120, or theexternal device interface unit 130 to generate and output a signal foroutputting an image or sound. An image signal image-processed by thecontroller 170 may be input to the display 180 and an imagecorresponding to the image signal may be displayed. In addition, theimage signal which is image-processed by the controller 170 may be inputto an external output device through the external device interface unit130.

A voice signal processed by the controller 170 may be output to theaudio output unit 185 in the form of sound. In addition, the voicesignal processed by the controller 170 may be input to an externaloutput device through the external device interface unit 130. Althoughnot shown in FIG. 2, the controller 170 may include a demultiplexer andan image processor, which will be described with reference to FIG. 3later.

Additionally, the controller 170 may control overall operation of theimage display apparatus 100. For example, the controller 170 may controlthe tuner 110 to tune to RF broadcasting corresponding to a channelselected by the user or a pre-stored channel. The controller 170 maycontrol the image display apparatus 100 according to a user commandinput through the user input interface unit 150 or an internal program.

The controller 170 may control the display 180 to display an image.Herein, the image displayed on the display 180 may be a still image, amoving image, a 2D image, or a 3D image. The controller 170 may performa control operation to generate a 3D object from a predetermined 2Dobject in an image displayed on the display 180 and display the same.For example, the object may be at least one of an accessed web page (anewspaper, a magazine, etc.), an EPG (electronic program guide), variousmenus, a widget, an icon, a still image, a moving image and text.

The controller 170 may recognize the position of the user based on theimage captured by an image capture unit (not shown). For example, thedistance (z-axis coordinate) between the user and the image displayapparatus 100 may be identified. The x-axis coordinate and the y-axiscoordinate in the display 180 corresponding to the user position mayalso be identified.

Although not shown in the figure, a channel browsing processor forcreating a thumbnail image corresponding to a channel signal or anexternal input signal may be further provided. The channel browsingprocessor may receive a stream signal TS output from the demodulator 120or a stream signal output from the external device interface unit 130and extract an image from the input stream signal to create a thumbnailimage. The created thumbnail image may be stream-decoded together with adecoded image and input to the controller 170. The controller 170 maydisplay a thumbnail list including a plurality of thumbnail images onthe display 180 using the input thumbnail image.

The thumbnail list may be displayed in a simple view mode in which thethumbnail list is displayed on a part of the display 180 with apredetermined image displayed on the display 180, or may be displayed ina full view mode in which the thumbnail list is displayed in most of thearea of the display 180. The thumbnail images in the thumbnail list maybe sequentially updated.

The drive unit 175 may include a roller (not shown) on which therollable display 180 is wound and a motor (not shown) for rotating theroller. The rollable display 180 may be rolled up or down by the driveunit 175. The display 180 generates drive signals by converting an imagesignal, data signal, OSD signal, and control signal processed by thecontroller 170 or an image signal, data signal and control signalreceived from the external device interface unit 130.

The display 180 includes an organic light emitting panel and is flexibleor rollable. The display 180 may be configured by a touchscreen and maythus be used not only as an output device but also as an input device.The audio output unit 185 receives a voice signal processed by thecontroller 170 and outputs voice. The audio output unit 185 may includea speaker unit 185 a as described above.

The capture unit (not shown) captures an image of the user. The captureunit (not shown) may be implemented using one camera. However,embodiments of the present invention are not limited thereto. Thecapture unit (not shown) may be implemented using a plurality ofcameras. The capture unit (not shown) may be buried in the upper portionof the display 180 of the image display apparatus or may be separatelydisposed. Image information captured by the capture unit (not shown) maybe input to the controller 170.

The controller 170 may sense gesture of the user based on an imagecaptured by the capture unit (not shown), a sensed signal from thesensor unit (not shown), or a combination thereof. The power supply 190supplies power to overall parts of the image display apparatus 100. Inparticular, the power supply 190 may supply power to the controller 170,which may be implemented in the form of a system on chip (SOC), thedisplay 180 for display of images, and the audio output unit 185 foroutputting audio signals.

Specifically, the power supply 190 may include a converter to convertalternating current (AC) power into direct current (DC) power and aDC-DC converter to change the level of the DC power. The remotecontroller 200 transmits a user input to the user input interface unit150. To this end, the remote controller 200 may employ Bluetooth, radiofrequency (RF) communication, infrared (IR) communication,ultra-wideband (UWB), or ZigBee. In addition, the remote controller 200may receive an image signal, a voice signal or a data signal from theuser input interface unit 150, and display or output the same.

The image display apparatus 100 may be a fixed or mobile digitalbroadcast receiver capable of receiving digital broadcast services. Theblock diagram of the image display apparatus 100 shown in FIG. 2 issimply illustrative. Constituents of the block diagram may beintegrated, added or omitted according to the specifications of theimage display apparatus 100 which is implemented in reality. That is,two or more constituents may be combined into one constituent, or oneconstituent may be subdivided into two or more constituents, whennecessary. In addition, the function performed by each block is simplyillustrative, and it should be noted that specific operations or devicesof the blocks do not limit the scope of the present invention.

Unlike the example shown in FIG. 2, the video display apparatus 100 maynot include the tuner 110 and the demodulator 120 shown in FIG. 2, butmay receive and reproduce image content through the network interfaceunit 135 or an external device interface unit 130.

The image display apparatus 100 is an example of an image signalprocessing device that performs signal processing of an image stored inthe apparatus or an input image. Other examples of the image signalprocessing device may include a set-top box without the display 180 andthe audio output unit 185 shown in FIG. 2, a DVD player, a Blu-rayplayer, a gaming device, and a computer.

FIG. 3 is an internal block diagram of the controller of FIG. 2.Referring to FIG. 3, the controller 170 according to an embodiment ofthe present invention may include a demultiplexer 310, an imageprocessor 320, a processor 330, an OSD generator 340, a mixer 345, aframe rate converter 350, and a formatter 360. The controller 170 mayfurther include an audio processor (not shown) and a data processor (notshown).

The demultiplexer 310 demultiplexes an input stream. For example, whenan MPEG-2 TS is input, the demultiplexer 310 may demultiplex the same toseparate the stream into an image signal, a voice signal and a datasignal. Herein, the stream signal input to the demultiplexer 310 may bea stream signal output from the tuner 110, the demodulator 120 or theexternal device interface unit 130.

The image processor 320 may perform image processing on thedemultiplexed image signal. To this end, the image processor 320 mayinclude an image decoder 325 and a scaler 335. The image decoder 325decodes the demultiplexed image signal, and the scaler 335 scales theresolution of the decoded image signal such that the image signal can beoutput through the display 180.

The image decoder 325 may include decoders of various standards. Theprocessor 330 may control overall operations in the image displayapparatus 100 or the controller 170. For example, the processor 330 maycontrol the tuner 110 to tune in RF broadcasting corresponding to achannel selected by the user or a pre-stored channel.

In addition, the processor 330 may control the image display apparatus100 according to a user command input through the user input interfaceunit 150 or an internal program. The processor 330 may control datatransmission with the network interface unit 135 or the external deviceinterface unit 130. The processor 330 may control operations of thedemultiplexer 310, the image processor 320 and the OSD generator 340,which are provided in the controller 170.

The OSD generator 340 generates an OSD signal automatically or accordingto user input. For example, the OSD generator 340 may generate, based ona user input signal, a signal for displaying various kinds ofinformation in the form of images or text on the screen of the display180. The generated OSD signal may contain various data including theuser interface screen window of the image display apparatus 100, variousmenu images, widgets, and icons.

The OSD generator 340 may generate a pointer which can be displayed onthe display, based on a pointing signal input from the remote controller200. In particular, the pointer may be generated by a pointing signalprocessor (not shown), and the OSD generator 340 may include thepointing signal processor. Of course, it is possible to provide thepointing signal processor (not shown) separately from the OSD generator340.

The mixer 345 may mix the OSD signal generated by the OSD generator 340and the decoded image signal image-processed by the image processor 320.The FRC 350 may convert the frame rate of an input image. The frame rateconverter 350 can output frames without performing frame rateconversion.

The formatter 360 may convert the input signal into an image signal tobe transmitted to the display 180. For example, it may convert the inputsignal into a low voltage differential signal (LVDS) or minl LVDS. Theaudio processor 370 in the controller 170 may process the demultiplexedaudio signal or an audio signal of predetermined content. To this end,the audio processor 370 may include various decoders.

The audio processor 370 in the controller 170 may perform processingsuch as adjustment of bass, treble, and volume. The data processor (notshown) in the controller 170 may perform data processing on ademultiplexed data signal. For example, if the demultiplexed data signalis a coded data signal, the data processor (not shown) may decode thedata signal. The coded data signal may be electronic program guide (EPG)information containing broadcast information such as a start time andend time of a broadcast program broadcast on each channel.

The block diagram of the controller 170 shown in FIG. 3 is simplyillustrative. Constituents of the block diagram may be integrated, addedor omitted according to the specifications of the controller 170 that isimplemented in reality. In particular, the FRC 350 and the formatter 360may not be provided in the controller 170. Instead, they may be providedindividually or as one separate module.

FIG. 4 illustrates a control method of the remote controller of FIG. 2.As shown in FIG. 4(a), a pointer 205 corresponding to the remotecontroller 200 may be displayed on the display 180. The user may movethe remote controller 200 up and down, left and right (FIG. 4(b)), orback and forth (FIG. 4(c)) or rotate the same. The pointer 205 displayedon the display 180 of the image display apparatus corresponds tomovement of the remote controller 200. As shown in the figure, since thepointer 205 moves according to movement of the remote controller 200 in3D space, the remote controller 200 may be referred to as a spatialremote controller or a 3D pointing device.

FIG. 4(b) illustrates a case where the pointer 205 displayed on thedisplay 180 of the image display apparatus moves to the left when theuser moves the remote controller 200 to the left. Information aboutmovement of the remote controller 200 sensed through a sensor of theremote controller 200 is transmitted to the image display apparatus. Theimage display apparatus may calculate coordinates of the pointer 205based on the information about the movement of the remote controller200. The image display apparatus may provide the pointer 205 such thatthe pointer 205 corresponds to the calculated coordinates.

FIG. 4(c) illustrates a case where the user moves the remote controller200 away from the display 180 while pressing down a specific button onthe remote controller 200. In this case, a selected area of the display180 corresponding to the pointer 205 may be zoomed in and displayed withthe size thereof increased. On the other hand, when the user moves theremote controller 200 closer to the display 180, the selected area maybe zoomed out and displayed with the size thereof reduced.Alternatively, the selected area may be zoomed out when the remotecontroller 200 moves away from the display 180, and may be zoomed inwhen the remote controller 200 moves closer to the display 180.

Vertical and lateral movement of the remote controller 200 may not berecognized while the specific button on the remote controller 200 ispressed down. That is, when the remote controller 200 approaches ormoves away from the display 180, vertical and lateral movement thereofmay not be recognized and only back-and-forth movement thereof may berecognized. If the specific button in the remote controller 200 is notpressed down, only the pointer 205 moves according to vertical andlateral movement of the remote controller 200. The speed and directionof movement of the pointer 205 may correspond to the speed and directionof movement of the remote controller 200.

FIG. 5 is an internal block diagram of the remote controller of FIG. 2.Referring to FIG. 5, the remote controller 200 may include a wirelesscommunication unit 1425, a user input unit 1435, a sensor unit 1440, anoutput unit 1450, a power supply 1460, a MEMORY 1470, and a controller1480. The wireless communication unit 1425 transmits/receives signalsto/from any one of the image display apparatuses according to theembodiments of the present invention described above. Of the imagedisplay apparatuses according to the embodiments of the presentinvention, one image display apparatus 100 will be described as anexample.

In this embodiment, the remote controller 200 may include an RF module1421 capable of transmitting and receiving signals to and from the imagedisplay apparatus 100 according to an RF communication standard. Theremote controller 200 may further include an IR module 1423 capable oftransmitting and receiving signals to and from the image displayapparatus 100 according to an IR communication standard.

In this embodiment, the remote controller 200 may transmit a signalcontaining information about movement of the remote controller 200 andthe like to the image display apparatus 100 via the RF module 1421. Inaddition, the remote controller 200 may receive a signal from the imagedisplay apparatus 100 via the RF module 1421. When necessary, the remotecontroller 200 may transmit commands related to power on/off, channelchange, and volume change to the image display apparatus 100 via the IRmodule 1423.

The user input unit 1435 may include a keypad, a button, a touchpad, ora touchscreen. The user may input a command related to the image displayapparatus 100 by manipulating the user input unit 1435. If the userinput unit 1435 includes a hard key, the user may input, to the remotecontroller 200, a command related to the image display apparatus 100 bypressing the hard key. If the user input unit 1435 includes atouchscreen, the user may input, to the remote controller 200, a commandrelated to the image display apparatus 100 by touching a soft key on thetouchscreen. The user input unit 1435 may include various kinds of inputmeans such as a scroll wheel and a jog wheel, but it should be notedthat this embodiment does not limit the scope of the present invention.

The sensor unit 1440 may include a gyro sensor 1441 or an accelerationsensor 1443. The gyro sensor 1441 may sense information about movementof the remote controller 200. For example, the gyro sensor 1441 maysense information about movement of the remote controller 200 withrespect to the X, Y and Z axes. The acceleration sensor 1443 may senseinformation about the movement speed of the remote controller 200. Thesensor unit 1440 may further include a distance measurement sensor tosense a distance to the display 180.

The output unit 1450 may output an image signal or voice signalcorresponding to manipulation of the user input unit 1435 or a signaltransmitted from the image display apparatus 100. The user mayrecognize, via the output unit 1450, whether the user input unit 1435 ismanipulated or the image display apparatus 100 is controlled. Forexample, the output unit 1450 may include an LED module 1451 configuredto be turned on when signals are transmitted to and received from theimage display apparatus 100 via the wireless communication unit 1425, avibration module 453 configured to generate vibration, a sound outputmodule 1455 configured to output sound, or a display 1457 configured tooutput an image.

The power supply 1460 supplies power to the remote controller 200. Ifthe remote controller 200 does not move for a predetermined time, thepower supply 1460 may stop supplying power to save power. The powersupply 1460 may resume supply of power when the predetermined keyprovided to the remote controller 200 is manipulated.

The memory 1470 may store various kinds of programs and application datanecessary for control or operation of the remote controller 200. Whenthe remote controller 200 wirelessly transmits and receives signals toand from the image display apparatus 100 via the RF module 1421, theremote controller 200 and the image display apparatus 100 may transmitand receive signals in a predetermined frequency band. The controller1480 of the remote controller 200 may store, in the memory 1470,information about, for example, a frequency band enabling wirelesstransmission and reception of signals to and from the image displayapparatus 100, which is paired with the remote controller 200, andreference the same.

The controller 1480 controls operations related to control of the remotecontroller 200. The controller 1480 may transmit, via the wirelesscommunication unit 1425, a signal corresponding to manipulation of apredetermined key of the user input unit 1435 or a signal correspondingto movement of the remote controller 200 sensed by the sensor unit 1440to the image display apparatus 100.

The user input interface unit 150 of the image display apparatus 100 mayinclude a wireless communication unit 151 capable of wirelesslytransmitting and receiving signals to and from the remote controller anda coordinate calculator 1415 capable of calculating coordinates of thepointer corresponding to operation of the remote controller 200. Theuser input interface unit 150 may wirelessly transmit and receivesignals to and from the remote controller 200 via an RF module 1412. Inaddition, the user input interface unit 150 may receive, via an IRmodule 1413, a signal transmitted from the remote controller 200according to an IR communication standard.

The coordinate calculator 1415 may calculate coordinates (x, y) of thepointer 202 to be displayed on the display 180, by correcting theunstable position of a hand or an error in a signal corresponding tooperation of the remote controller 200 which is received via thewireless communication unit 151. The transmitted signal of the remotecontroller 200 input to the image display apparatus 100 via the userinput interface unit 150 is transmitted to the controller 180 of theimage display apparatus 100. The controller 180 may determineinformation about an operation of the remote controller 200 ormanipulation of a key based on the signal transmitted from the remotecontroller 200, and control the image display apparatus 100 according tothe information.

As another example, the remote controller 200 may calculate coordinatesof the pointer corresponding to movement thereof and output the same tothe user input interface unit 150 of the image display apparatus 100. Inthis case, the user input interface unit 150 of the image displayapparatus 100 may transmit, to the controller 180, information about thereceived coordinates of the pointer without separately correcting theunstable position of the hand or error. As another example, in contrastwith the example of the figure, the coordinate calculator 1415 may beprovided in the controller 170 rather than in the user input interfaceunit 150.

FIG. 6 is a flowchart illustrating an operation method of an imagedisplay apparatus having a rollable display according to an embodimentof the present invention, and FIGS. 7A to 16D are views referencing theoperation. First, when there is a power-on input (S605), the controller170 of the image display apparatus 100 may control power to be suppliedto the signal processing device 300 (S610).

Particularly, if there is no separate input after the power-on input,the controller 170 of the image display apparatus 100 may operate in astandby mode, in which only a part of the units in the signal processingdevice 300 may operate and power may not be supplied to the display 180.For example, the controller 170 of the image display apparatus 100 maybe in the standby mode and control power to be supplied only to the userinput interface unit 150. Alternatively, the controller 170 may controlpower to be further supplied to the network interface unit 135 and theexternal device interface unit 130.

Next, when a content display command is given (S615), the controller 170of the image display apparatus 100 may determine the size of the display180 according to the attribute of the content to be displayed (S620) andcontrol the drive unit 175 to roll the display 180 up or down accordingto the determined size (S625). Specifically, the controller 170 of theimage display apparatus 100 may determine the height of the display 180according to the attribute of the content to be displayed, and controlthe drive unit 175 to roll the display 180 up or down according to thedetermined height.

Accordingly, the height of the display may be changed according to theattribute of the content. In addition, by changing the height of thedisplay according to the attribute of the content, unnecessary powerconsumption may be reduced.

FIG. 7A illustrates the signal processing device 300 of the imagedisplay apparatus 100 set in the standby mode after being powered on.The rollable display 180 is wound around a roller in the signalprocessing device 300, and is not exposed to the outside of the opening150.

Next, FIG. 7B illustrates that the rollable display 180 is rolled upaccording to a music playback command and thus the height of therollable display 180 is ha. The controller 170 of the image displayapparatus 100 may perform a control operation to play music and outputsound according to the music playback command and further control therollable display 180 to be rolled up to have a height equal to ha. Here,ha may be approximately 20 cm.

In playing back music, the controller 170 of the image display apparatus100 may control music playback information to be displayed on therollable display 180 having the height of ha. Thereby, the user cancheck the relevant information while listening to the music. The musicplayed in FIG. 7B may be from a music file stored in the internal memoryor a music file stored in an external device.

Alternatively, the music may be streamed and output from the networkinterface unit 135 or the external device interface unit 130. The musicplayed in FIG. 7B may be radio music received through the tuner 110.

Next, FIG. 7C illustrates that the rollable display 180 is rolled upaccording to a search command and thus the height of the rollabledisplay 180 is hb. The controller 170 of the image display apparatus 100may perform a search according to the search command and control asearch result to be displayed. In addition, the controller 170 maycontrol the rollable display 180 to be rolled up such that the height ofthe rollable display 180 becomes hb. Here, hb may be greater than ha andmay be approximately 40 cm. In the example of FIG. 7C, a thumbnail list720 is displayed as a search result.

Referring to FIGS. 7B and 7C, when the content to be displayed is audiocontent, the controller 170 may control the size of the display 180 tobe reduced compared to the size given when the content to be displayedis video content. Thus, in playing back music, unnecessary powerconsumption may be reduced.

Next, FIG. 7D illustrates that the rollable display 180 is rolled upaccording to a broadcast image display command such that the height ofthe rollable display 180 is hc. The controller 170 of the image displayapparatus 100 may perform a control operation to receive broadcastcontent and output a broadcast image and broadcast sound according to abroadcast image display command, and may also control the rollabledisplay 180 to be rolled up such that the height of the rollable display180 becomes hc. Here, hc may be greater than hb and may be approximately100 cm.

Next, FIG. 7E illustrates that the rollable display 180 is rolled upaccording to a movie image display command such that the height of therollable display 180 is hd. The controller 170 of the image displayapparatus 100 may perform a control operation to receive movie contentand output a movie image and movie sound, and may also control therollable display 180 to be rolled up such that the height of therollable display 180 becomes hd. Here, hd may be less than hc and may beapproximately 80 cm.

Referring to FIGS. 7D and 7E, to switch from a 16:9 broadcast image to a21:9 movie image in displaying images, the horizontal length of thedisplay 180 may need to be increased. In the present invention, sincethe vertical length of the display 180 cannot be changed, the height ofthe display 180 is preferably controlled to be reduced. That is, whenthe content to be displayed is a 21:9 movie image, the controller 170 ofthe image display apparatus 100 may control the height of the display180 to be reduced compared to the height given when the content to bedisplayed is a 16:9 broadcast image. Accordingly, as the size of thedisplay is adjusted to a size proper for the size of the originalcontent, the feeling of immersion in viewing the content may be furtherenhanced.

Next, FIG. 7F illustrates that the rollable display 180 is rolled up ordown according to a web screen display command for search such that theheight of the rollable display 180 is hf. The controller 170 of theimage display apparatus 100 performs a control operation according tothe web screen display command for search to connect, through thenetwork interface unit 135, to a server providing a search service, andreceives web screen information for search from the server.

Then, the controller 170 of the image display apparatus 100 controls aweb screen for search to be displayed, based on the received web screeninformation for search, and may also control the rollable display 180 tobe rolled up or down such that the height of the rollable display 180becomes hf. Here, hf may be approximately 60 cm.

Next, FIG. 7G illustrates that the rollable display 180 is rolled up ordown according to a web screen display command for reproduction of amoving image such that the height of the rollable display 180 is hg. Thecontroller 170 of the image display apparatus 100 performs a controloperation according to the web screen display command for reproductionof a moving image to connect to a server providing a moving imagereproduction service, and receives web screen information forreproduction of a moving image from the server.

Then, the controller 170 of the image display apparatus 100 controls aweb screen for reproduction of a moving image to be displayed, based onthe web screen information for the received web screen information forreproduction of a moving image, and may also control the rollabledisplay 180 to be rolled up or down such that the height of the rollabledisplay 180 becomes hg. Here, hg is greater than hf and may beapproximately 110 cm.

Referring to FIGS. 7F and 7G, the height of the rollable display 180 inFIG. 7G where the amount of data on the web screen is large ispreferably greater than the height in FIG. 7F. That is, the controller170 of the image display apparatus 100 may control the height of thedisplay 180 to change according to the amount of data of the content tobe displayed.

Next, FIG. 7H illustrates that a background image of PC screen images isdisplayed according to a PC screen image display command, and therollable display 180 is rolled up or down such that the height of therollable display 180 is hh. The controller 170 of the image displayapparatus 100 may receive a background image from a PC, which is anexternal PC, through the external device interface 130 according to thePC screen image display command.

Then, the controller 170 of the image display apparatus 100 may controlthe received background image of the PC to be displayed, and alsocontrol the rollable display 180 to be rolled up or down such that theheight of the rollable display 180 becomes hh. Here, hh may beapproximately 90 cm.

Next, FIG. 7I illustrates that a presentation document image (PPTscreen) of the PC screen images is displayed according to a PC screenimage display command, and the rollable display 180 is rolled up or downsuch that the height of the rollable display 180 is hi. The controller170 of the image display apparatus 100 may receive a presentationdocument image from a PC, which is an external PC, through the externaldevice interface unit 130 according to the PC screen image displaycommand.

Then, the controller 170 of the image display apparatus 100 may controlthe received presentation document image to be displayed and alsocontrol the rollable display 180 to be rolled up or down such that theheight of the rollable display 180 becomes hi. Here, hi may beapproximately 70 cm.

Next, FIG. 7J illustrates that a document creation image (DOC screen) ofthe PC screen images is displayed according to a PC screen image displaycommand, and the rollable display 180 is rolled up or down such that theheight of the rollable display 180 is hi. The controller 170 of theimage display apparatus 100 may receive a document creation image from aPC, which is an external device, through the external device interfaceunit 130 according to the PC screen image display command.

Then, the controller 170 of the image display apparatus 100 may controlthe received document creation image to be displayed and also controlthe rollable display 180 to be rolled up or down such that the height ofthe rollable display 180 becomes hj. Here, hj may be approximately 120cm.

Referring to FIGS. 7H and 7J, the height of the document creation imageof FIG. 7J is greater than the width of the document creation image, andaccordingly the height of the display 180 for the document creationimage of FIG. 7J is preferably greater than the height of the display180 for the background image of FIG. 7H.

Accordingly, in when the content to be displayed is a document creationimage executed on the PC, the controller 170 of the image displayapparatus 100 may control the height of the display 180 to be increasedover the height given when the content to be displayed is the backgroundimage of the PC.

Referring to FIGS. 7H and 7I, the width of the presentation documentimage of FIG. 71 is greater than the height of the presentation documentimage, and accordingly the height of the display 180 for thepresentation document image of FIG. 7I is preferably less than theheight of the display 180 for the background image of FIG. 7H.

Accordingly, when the content to be displayed is a presentation documentimage executed on the PC, the controller 170 of the image displayapparatus 100 may control the height of the display 180 to be decreasedover the height given when the content to be displayed is the backgroundimage of the PC.

Next, FIG. 7K illustrates that a single-player game image is displayedaccording to a game image display command, and the rollable display 180is rolled up or down such that the height of the rollable display 180 ishk. The controller 170 of the image display apparatus 100 may receive asingle-player game image from a gaming device, which is an externaldevice, through the external device interface unit 130 according to agame image display command.

Then, the controller 170 of the image display apparatus 100 may controlthe received single-player game image to be displayed, and also controlthe rollable display 180 to be rolled up or down such that the height ofthe rollable display 180 becomes hk. Here, hk may be approximately 85cm.

Next, FIG. 7L illustrates that a two-player game image is displayedaccording to a game image display command, and the rollable display 180is rolled up or down such that the height of the rollable display 180 ishk. The controller 170 of the image display apparatus 100 may receive atwo player-game image from a gaming device, which is an external device,through the external device interface unit 130 according to a game imagedisplay command.

Then, the controller 170 of the image display apparatus 100 may controlthe received two player-game image to be displayed, and also control therollable display 180 to be rolled up or down such that the height of therollable display 180 becomes hl. Here, hl may be approximately 120 cm.

Referring to FIGS. 7K and 7L, when the content to be displayed is a twoplayer-game image, the controller 170 of the image display apparatus 100may control the height of the display 180 to be increased above theheight given when the content to be displayed is a single-player gameimage. For example, even if the single-player game image and thetwo-player game image are input with the same height, the controller 170of the image display apparatus 100 may detect a boundary region or thelike in the images to identify the two-player game image, andcorrespondingly increase the height of the rollable display 180.Accordingly, user convenience may be enhanced in displaying game images.

FIG. 8A illustrates the signal processing device 300 of the imagedisplay apparatus 100 set in the standby mode after being powered on,similar to FIG. 7A. Thus, the rollable display 180 is wound around theroller in the signal processing device 300 and is not exposed to theoutside of the opening 150.

Next, FIG. 8B illustrates operation of the image display apparatus 100for voice recognition when a user voice input 822 is provided. Whenvoice input is provided by the user, the controller 170 of the imagedisplay apparatus 100 may enter the voice recognition mode and displayan object 810 indicating the voice recognition mode. To this end, thecontroller 170 of the image display apparatus 100 may control therollable display 180 to be rolled up or down to have the height of ha.Thus, the user may intuitively recognize that voice recognition ispossible.

Next, FIG. 8C illustrates that an object 815 indicating that voicerecognition is being performed is displayed on the rollable display 180based on voice input 822 from the user. Accordingly, the user mayintuitively recognize that voice recognition is being performed. Next,FIG. 8D illustrates that an object 817 indicating voice recognitionfailure is displayed on the rollable display 180 based on the voiceinput 822 from the user. Accordingly, the user may intuitively recognizethe voice recognition failure.

Next, FIG. 8E illustrates that the rollable display 180 is rolled downand wound around the roller in the signal processing device 300 so asnot to be exposed to the outside of the opening 150 based on terminationof the voice recognition mode. Next, FIG. 8F illustrates that, a searchis performed according to the voice input 822 from the user and athumbnail list 720 representing the search result is displayed.

In this operation, the controller 170 of the image display apparatus 100may perform a control operation to perform a search according to asearch command and display a search result, and also control therollable display 180 to be rolled up such that the height of therollable display 180 becomes hb.

Next, FIG. 8G illustrates that a search is performed according to thevoice input 822 from the user, and a result image 720 b representing thecorresponding result is displayed. In comparison with FIG. 8F, as therollable display 180 is rolled up, the height of the rollable display180 becomes hba, and more search results are displayed in the searchresult image 720 b. Particularly, in addition to the thumbnail nail list720 of FIG. 8F, the content of the search result is further added to thelower portion of the search result image 720 b.

Next, FIG. 8H illustrates a search performed according to the voiceinput 822 from the user, and an image 730 corresponding to one item inthe search result is displayed. In this case, the controller 170 of theimage display apparatus 100 may control the rollable display 180 to berolled up to have the height of he in order to display the image 730.Accordingly, the display may be rolled up in accordance with the imagedesired by the user.

FIG. 9A illustrates the signal processing device 300 of the imagedisplay apparatus 100 set in the standby mode after being powered on,similar to FIG. 7A. Thus, the rollable display 180 is wound around theroller in the signal processing device 300 and is not exposed to theoutside of the opening 150. When a home screen is input through theremote controller 200 or the like in the standby mode, the controller170 of the image display apparatus 100 may control the home screen to bedisplayed.

The home screen may display a broadcast image and an application listshown under the broadcast image. The controller 170 of the image displayapparatus 100 may roll up the rollable display 180 to display the homescreen. In this case, different images may be controlled to be displayedaccording to the height of the rollable display 180.

For example, as shown in FIG. 9B, when the height of the display 180 ishaa during rolling up, the controller 170 of the image display apparatus100 may control an application list 910 having a plurality ofapplication items to be displayed. Thereafter, when rolling up of therollable display 180 is completed, the controller 170 of the imagedisplay apparatus 100 may perform a control operation to display thehome screen on which the application list 910 and a broadcast image aredisplayed together.

When an item is selected in the application list 910 by the pointer 205of the remote controller 200 while the height of the rollable display180 is haa as shown in FIG. 9B, the controller 170 of the image displayapparatus 100 may control a screen image corresponding to the selecteditem to be displayed as shown in FIG. 9C.

FIG. 9B illustrates selecting a thumbnail item. That is, as shown inFIG. 9C, the controller 170 of the image display apparatus 100 maycontrol the rollable display 180 to be rolled up such that the height ofthe rollable display 180 becomes hm, and control a screen image 920corresponding to the selected item to be displayed.

The controller 170 of the image display apparatus 100 may control theapplication list to be displayed on the display 180 when the height ofthe display 180 is a first height. When an item is selected in theapplication list by the pointer, which is displayed according tomovement of the remote controller 200, the controller 170 may controlthe display 180 to be rolled up to have a second height greater than thefirst height in order to display the screen image of the selectedapplication. Details will be described with reference to FIGS. 10A to10D below.

FIG. 10A illustrates the signal processing device 300 of the imagedisplay apparatus 100 set in the standby mode after being powered on,similar to FIG. 7A. Thus, the rollable display 180 is wound around theroller in the signal processing device 300 and is not exposed to theoutside of the opening 150.

When a home screen is input through the remote controller 200 or thelike in the standby mode, the controller 170 of the image displayapparatus 100 may control the home screen to be displayed. The homescreen may display a broadcast image and an application list shown underthe broadcast image.

The controller 170 of the image display apparatus 100 may roll up therollable display 180 to display the home screen. In this case, differentimages may be controlled to be displayed according to the height of therollable display 180. For example, as shown in FIG. 10B, when the heightof the display 180 is haa during rolling up, the controller 170 of theimage display apparatus 100 may control an application list 1010 havinga plurality of application items to be displayed.

Thereafter, when rolling up of the rollable display 180 is completed,the controller 170 of the image display apparatus 100 may perform acontrol operation to display the home screen on which the applicationlist 1010 and a broadcast image are displayed together. When an item isselected in the application list 1010 by the pointer 205 of the remotecontroller 200 while the height of the rollable display 180 is haa asshown in FIG. 10B, the controller 170 of the image display apparatus 100may control a screen image corresponding to the selected item to bedisplayed as shown in FIG. 10C.

Particularly, as shown in FIG. 10C, the controller 170 of the imagedisplay apparatus 100 may perform a control operation during rolling-upof the rollable display 180 to display a broadcast image 730 b andoutput sound Soa1, Sob1 of a first volume at the height hcb of therollable display 180.

Next, as shown in FIG. 10D, when rolling up of the rollable display 180is completed, the controller 170 of the image display apparatus 100 mayperform a control operation to display a larger broadcast image 730 andoutput the sound Soa2, Sob2 of a second volume higher than the firstvolume at the height hc of the rollable display 180 greater than theheight hcb.

Accordingly, the user may intuitively recognize that the displayed imageis enlarged and the volume increases during rolling-up of the rollabledisplay 180. On the other hand, when the height of the rollable display180 is decreased from the height of FIG. 10D to the height of FIG. 10C,the controller 170 of the image display apparatus 100 may perform acontrol operation to decrease the size of the displayed image and thevolume during rolling down of the rollable display 180. Accordingly, theuser may intuitively recognize that the display is being rolled down.

If the height of the display 180 is less than a predetermined heightwhen a broadcast image display input is provided during rolling down ofthe display 180, the broadcast image may be displayed, but may beexcessively small. For this reason, the controller 170 of the imagedisplay apparatus 100 may control the application list to be displayedon the display 180 as shown in FIG. 10B.

If the height of the display 180 is greater than or equal to apredetermined height during rolling up of the display 180, thecontroller 170 of the image display apparatus 100 may perform a controloperation to display a broadcast image 730 b and output sound Soa1, Sob1of the first volume at the height hcb of the display 180 as shown inFIG. 10C.

Next, as shown in FIG. 10D, when rolling up of the rollable display 180is completed, the controller 170 of the image display apparatus 100 mayperform a control operation to display a larger broadcast image 730 andoutput the sound Soa2, Sob2 of a second volume higher than the firstvolume at the height hc of the rollable display 180 greater than theheight hcb. Meanwhile, as shown in FIGS. 10C and 10D, in order todisplay a first content image, the controller 170 of the image displayapparatus 100 may control the volume of sound corresponding to the firstcontent image to increase in proportion to the height of the display 180during rolling up of the display 180.

Similarly, in order to display the first content image, the controller170 of the image display apparatus 100 may control the volume of soundcorresponding to the first content image to decrease in proportion tothe height of the display 180 during rolling down of the display 180.

Similar to FIGS. 10C and 10D, in order to display the first contentimage, the controller 170 of the image display apparatus 100 may controlthe brightness of the first content image to increase in proportion tothe height of the display 180 during rolling up of the display 180.Similarly, in order to display the first content image, the controller170 of the image display apparatus 100 may control the brightness of thefirst content image to decrease in proportion to the height of thedisplay 180 during rolling down of the display 180.

Upon receiving user information from the remote controller 200 or themobile terminal 600, the controller 170 of the image display apparatus100 may control recommended content or preferred content to be displayedaccording to the user information and may control the display 180 to berolled up or down according to the recommended content or the preferredcontent. Details will be described with reference to FIGS. 11A to 12B.

FIG. 11A illustrates that a thumbnail list 1105 having a plurality ofthumbnails is displayed when the height of the rollable display 180 isha. In this case, authentication of a first user MAa may be performed bya fingerprint sensor or the like included in the remote controller 200,and first user authentication information may be transmitted from theremote controller 200 to the user input interface unit 150 in the signalprocessing device 300.

The controller 170 of the image display apparatus 100 may controlrecommended content or preferred content for the first user to bedisplayed, based on the first user authentication information receivedthrough the user input interface unit 150. For example, the controller170 may perform a control operation to display a broadcast imagecorresponding to a second thumbnail 1105 b in the thumbnail list 1105.Meanwhile, the controller 170 of the image display apparatus 100 maycontrol the display 180 to be rolled up or down according to therecommended content or the preferred content.

FIG. 11B illustrates that a broadcast image 1110 of a channel for thefirst user is displayed as the preferred content for the first user, andthus the display 180 is controlled to be rolled up to have a height hc.Thereby, content for the first user can be provided.

Next, FIG. 12A illustrates that a thumbnail list 1105 having a pluralityof thumbnails is displayed when the height of the rollable display 180is ha. In this case, authentication of a second user MAb may beperformed by the fingerprint sensor or the like included in the remotecontroller 200, and the second user authentication information may betransmitted from the remote controller 200 to the user input interfaceunit 150 in the signal processing device 300.

The controller 170 of the image display apparatus 100 may controlrecommended content or preferred content for the second user to bedisplayed, based on the second user authentication information receivedthrough the user input interface unit 150. For example, the controller170 may perform a control operation to display a broadcast imagecorresponding to a first thumbnail 1105 a in the thumbnail list 1105.Meanwhile, the controller 170 of the image display apparatus 100 maycontrol the display 180 to be rolled up or down according to therecommended content or the preferred content.

FIG. 12B illustrates that a movie image 1120 for the second user isdisplayed as the preferred content for the second user, and thus thedisplay 180 is controlled to be rolled up to have a height hd less thanhc. Accordingly, content for the second user can be provided.

Unlike the cases of FIGS. 11A to 12B, when the controller 170 of theimage display apparatus 100 receives user authentication informationfrom a mobile terminal through the network interface unit 135, it maycontrol the recommended content or the preferred content to be displayedaccording to the user information, and control the display 180 to berolled up or down according to the recommended content or the preferredcontent.

When the controller 170 of the image display apparatus 100 receivesfirst user information from a first mobile terminal 600, it may controlthe first user information to be displayed and control the display 180to have a second height. When the controller 170 further receives seconduser information from a second mobile terminal 600, it may control thesecond user information to be further displayed and control the display180 to have a second height greater than the first height. Details willbe described with reference to FIGS. 13A to 13E.

First, FIG. 13A illustrates that pairing with a first mobile terminal600 a is performed and an object indicating access of a first user isdisplayed. Authentication of the first user MAa may be performed by afingerprint sensor or the like provided in the first mobile terminal 600a and first user authentication information may be transmitted from thefirst mobile terminal 600 a to the signal processing device 300 throughthe network interface unit 135 in the signal processing device 300.

The controller 170 of the image display apparatus 100 may performpairing with the first mobile terminal 600 a based on the first userauthentication information received through the network interface unit135. Thus, the controller 170 of the image display apparatus 100 maycontrol the height of the rollable display 180 to be ha1 in order todisplay the object indicating access of the first user.

Next, FIG. 13B illustrates that additional pairing with a second mobileterminal 600 b is performed and an object indicating access of a seconduser is additionally displayed, during pairing with the first mobileterminal 600 a. Authentication for the second user MAb may be performedby a fingerprint sensor or the like provided in the second mobileterminal 600 b and second user authentication information may betransmitted from the second mobile terminal 600 b to the networkinterface unit 135 in the signal processing device 300.

The controller 170 of the image display apparatus 100 may furtherperform pairing with the second mobile terminal 600 b based on thesecond user authentication information received through the networkinterface unit 135. That is, the controller 170 of the image displayapparatus 100 may perform multi-pairing with the first and second mobileterminals.

Thus, the controller 170 of the image display apparatus 100 may controlthe height of the rollable display 180 to be ha2, which is greater thanha1, in order to display an object indicating simultaneous access of thefirst and second users.

In FIG. 13B, an object 1212 indicating access of the second user isdisplayed over an object 1210 indicating access of the first user.Accordingly, it is possible to recognize that pairing with a pluralityof mobile terminals has been performed.

After pairing with the first mobile terminal 600 a is performed and theobject indicating access of the first user is displayed as shown in FIG.13A, the controller 170 of the image display apparatus 100 may perform acontrol operation to display a thumbnail list 1225 related to therecommended content or preferred content for the first user, as shown inFIG. 13C.

The controller 170 of the image display apparatus 100 may control theheight of the display 180 to be hb by rolling up the display 180 todisplay the thumbnail list 1225 of FIG. 13C. After displaying thethumbnail list 1225 of FIG. 13C, the controller 170 of the image displayapparatus 100 may perform a control operation to display a home screenfor the first user as shown in FIG. 13D.

The home screen of FIG. 13D includes a thumbnail list 1225 related torecommended or preferred content and an application list 1010, butvarious modifications are possible. To display the home screen of FIG.13D, the controller 170 of the image display apparatus 100 may controlthe height of the display 180 to be hbb, which is greater than hb, byrolling up the display 180. The first user may select any one of thethumbnail list 1225 and the application list 1010 through the mobileterminal 600 a or the remote controller 200.

FIG. 13D illustrates that the first user selects a broadcast item 1225 bin the thumbnail list 1225. Thus, the controller 170 of the imagedisplay apparatus 100 may perform a control operation to display abroadcast image 1110 corresponding to the broadcast item 1225 b, asshown in FIG. 13E. In order to display the broadcast image 1110 in FIG.13E, the controller 170 of the image display apparatus 100 may controlthe display 180 to be rolled up or down such that the height of thedisplay 180 becomes hc. Accordingly, content for the first user can beprovided.

Meanwhile, the controller 170 of the image display apparatus 100 maycontrol the height of the display 180 to change according to the amountof content displayed on the mobile terminal 600 while being paired withthe mobile terminal 600. Details will be described with reference toFIGS. 14A to 14C.

FIG. 14A illustrates that mirroring is performed between the imagedisplay apparatus 100 and the mobile terminal 600 after the imagedisplay apparatus 100 and the mobile terminal 600 are paired. As shownin FIG. 14A, when mail information 1305 is displayed on the screen ofthe mobile terminal 600 at a first time, the controller 170 of the imagedisplay apparatus 100 may control the mail information 1315 to bedisplayed in response. In this case, the controller 170 of the imagedisplay apparatus 100 may control the height of the rollable display 180to be hn1 in order to display the mail information 1315.

Next, as shown in FIG. 14B, when moving image information 1307 isadditionally displayed on the screen of the mobile terminal 600 inaddition to the mail information 1305 at a second time, the controller170 of the image display apparatus 100 may control the mail information1315 and moving image information 1317 to be displayed in response. Inthis case, the controller 170 of the image display apparatus 100 maycontrol the height of the rollable display 180 to be hn2, which isgreater than hn1, in order to display the mail information 1315 and themoving image information 1317.

Next, as shown in FIG. 14C, when message information 1309 is displayedin addition to the mail information 1305 and the moving imageinformation 1307 on the screen of the mobile terminal 600 at a thirdtime, the controller 170 of the image display apparatus 100 may controlthe mail information 1315, the moving image information 1317 and themessage information 1319 to be displayed.

In this case, the controller 170 of the image display apparatus 100 maycontrol the height of the rollable display 180 to be hn3, which isgreater than hn2, in order to display the mail information 1315, themoving image information 1317, and the message information 1319.Meanwhile, the controller 170 of the image display apparatus 100 maycalculate a distance according to the strength of a signal from theremote controller 200 or the mobile terminal 600, and control the heightof the display 180 to be changed according to the calculated distance.Details will be described with reference to FIGS. 15A to 15D.

FIG. 15A illustrates the signal processing device 300 of the imagedisplay apparatus 100 set in the standby mode after being powered on.Thus, the rollable display 180 is wound around the roller in the signalprocessing device 300 and is not exposed to the outside of the opening150.

Upon receiving a signal from the remote controller 200, the controller170 of the image display apparatus 100 may control the display 180 woundin the signal processing device 300 to be rolled up. In this case, thecontroller 170 of the image display apparatus 100 may calculate adistance according to the strength of the signal from the remotecontroller 200, and control the height of the display 180 to be changedaccording to the calculated distance.

FIG. 15B illustrates that the distance between the remote controller 200and the signal processing device 300 is Dxa. Accordingly, the controller170 of the image display apparatus 100 may control the height of therollable display 180 to be ha according to the distance Dxa.

Next, FIG. 15C illustrates that the distance between the remotecontroller 200 and the signal processing device 300 is Dxb, which isless than Dxa. Accordingly, the controller 170 of the image displayapparatus 100 may control the height of the rollable display 180 to behb, which is greater than ha, according to the distance Dxb. That is,the controller 170 of the image display apparatus 100 may control theheight of the rollable display 180 to be changed in inverse proportionto the distance between the remote controller 200 and the signalprocessor 300.

Alternatively, the controller 170 of the image display apparatus 100 maycontrol the height of the rollable display 180 to be changed inproportion to the distance between the remote controller 200 and thesignal processor 300. That is, in FIG. 15C, the height of the rollabledisplay 180 may be less than that of FIG. 15B.

The brightness of the rollable display 180 of FIG. 15C may be lower thanin the case of FIG. 15B. Thus, the brightness may be lowed for a user ata closer distance and the eyesight of the user may be protected.Conversely, the brightness of the rollable display 180 of FIG. 15C maybe greater than that of FIG. 15B.

According to the lighting mode or when there is no signal input from theremote controller 200 for a predetermined time, the controller 170 ofthe image display apparatus 100 may perform a control operation tooperate in the lighting mode as shown in FIG. 15D. For example, thecontroller 170 of the image display apparatus 100 may control therollable display 180 to display light of the yellowish color, andcontrol the height of the rollable display 180 to be hx. Accordingly,the rollable display 180 may be utilized as a lighting device.

Meanwhile, in the lighting mode, the controller 170 of the image displayapparatus 100 may change the color of the light output from the rollabledisplay 180. Further, in the lighting mode, the color of the light maybe changed according to the music that is played back. Mood lighting canbe implemented. The controller 170 of the image display apparatus 100may control a pointer to be displayed on the display 180 at a firstheight of the display 180, and control the height of the display 180 tobe a second height greater than the first height according to movementof a pointing signal of the display 180. Details will be described withreference to FIGS. 16A to 16D.

FIG. 16A illustrates output of sound according to music playback whilethe rollable display 180 is wound around a roller in the signalprocessing device 300 and is not exposed to the outside of the opening150. For example, when music playback input is provided from the pairedmobile terminal 600, the controller 170 of the image display apparatus100 may control the sound of music played back in the mobile terminal600 to be output through a speaker unit 185 a in the processingapparatus 300.

Upon receiving a signal from the remote controller 200, the controller170 of the image display apparatus 100 may control the display 180 woundin the signal processing device 300 to be rolled up. FIG. 16Billustrates that the height of the display 180 is ha. In this case, thecontroller 170 of the image display apparatus 100 may receive a pointingsignal from the remote controller 200.

Then, the controller 170 of the image display apparatus 100 may controlthe pointer 205 a to be displayed based on the pointing signal, as shownin FIG. 16C. In this case, the height of the display 180 may be Araa.When the controller 170 of the image display apparatus 100 receives apointing signal corresponding to upward movement, it may control thedisplay 180 to be rolled up to have a height of Ar to display thepointer, as shown in FIG. 16D. Meanwhile, the controller 170 of theimage display apparatus 100 may control the size of the pointer or aunit movement distance of the pointer to be changed with the size of thedisplay 180.

Referring to FIGS. 16C and 16D, since the height of the display 180 inFIG. 16D is Ar and is greater than the height of FIG. 16C, thecontroller 170 of the image display apparatus 100 may control the sizeof the pointer 205 b to be larger than the size of the pointer 205 a ofFIG. 16C, and control the unit movement distance of the pointer, whichis Szb, to be longer than Sza in FIG. 16C. Accordingly, the pointer maybe moved or displayed according to the size of the display, and thususer convenience may be enhanced.

The display apparatus according to embodiments of the present inventionis not limited to configurations and methods of the embodimentsdescribed above. Variations may be made to the embodiments describedabove by selectively combining all or some of the embodiments.

As is apparent from the above description, according to an embodiment ofthe present invention, there is provided an image display apparatusincluding a rollable display, a drive unit to change a size of thedisplay, and a controller to control the display, wherein, when acontent display command is input, the controller determines the size ofthe display according to an attribute of content to be displayed, andcontrols the drive unit to roll the display up or down according to thedetermined size. Accordingly, the size of the display may be changedaccording to the attribute of the content.

In addition, unnecessary power may be reduced by changing the size ofthe display according to the attribute of the content. As a result,power consumption may be reduced. In particular, if the content to bedisplayed is audio content, the size of the display may be controlled tobe reduced as compared to a case when the content to be displayed isvideo content. Thereby, unnecessary power may be reduced. As a result,power consumption may be reduced.

When the content to be displayed is a 21:9 movie image, the height ofthe display may be controlled to be reduced compared to the height givenwhen the content to be displayed is a 16:9 broadcast image. Accordingly,as the size of the display is adjusted to a size proper for the size ofthe original content, immersiveness in viewing the content may befurther enhanced.

By causing the height of the display to be changed according to theamount of data of the content to be displayed, unnecessary power can bereduced, and consequently, power consumption can be reduced. When thecontent to be displayed is a game screen for two players, the height ofthe display may be controlled to be greater than when the content to bedisplayed is a game screen for a single player. Thereby, userconvenience may be enhanced in displaying a game screen.

Meanwhile, in order to display a first content image while the displayis rolling up, the volume of sound corresponding to the first contentimage may be controlled to increase in proportion to the height of thedisplay. Accordingly, the user may recognize the height of the displaythrough the sound. During pairing with a mobile terminal, the height ofthe display may be controlled to change according to the amount ofcontent displayed on the mobile terminal. Thereby, user convenience maybe enhanced, and power consumption may be reduced.

By changing the height of the display according to movement of apointing signal from a remote controller, user convenience may beenhanced, and power consumption may be reduced.

According to another embodiment of the present invention, there isprovided an image display apparatus including a rollable display, adrive unit to change a height of the display, and a controller tocontrol the display, wherein, when a content display command is input,the controller determines the height of the display according to anattribute of content to be displayed and controls the drive unit to rollup or roll down the display according to the determined height.Accordingly, the size of the display may be changed according to theattribute of the content.

Although the preferred embodiments of the present invention have beendisclosed for illustrative purposes, those skilled in the art willappreciate that various modifications, additions and substitutions arepossible, without departing from the scope and spirit of the inventionas disclosed in the accompanying claims.

What is claimed is:
 1. An image display apparatus comprising: a rollabledisplay; a drive unit configured to roll up or roll down the rollabledisplay; a network interface unit configured to exchange data with atleast one mobile terminal; and a controller configured to change aheight of the rollable display based on data received from the at leastone mobile terminal.
 2. The image display apparatus according to claim1, wherein the controller is configured to change a height of therollable display based on a number of the at least one mobile terminal,which pairing with the image display apparatus.
 3. The image displayapparatus according to claim 1, wherein in state that mirroring isperformed between a first mobile terminal and the image displayapparatus, the controller is configured to change a height of therollable display based on an amount of content to be displayed on thefirst mobile terminal.
 4. The image display apparatus according to claim1, wherein in state that mirroring is performed between a first mobileterminal and the image display apparatus, if amount of content displayedon the first mobile terminal at a first time is greater than amount ofcontent displayed on the first mobile terminal at a second time, thecontroller is configured to change a height of the rollable display froma first height to a second height.
 5. The image display apparatusaccording to claim 1, wherein the controller is configured to calculatea distance according to a strength of a signal from the mobile terminal,and change a height of the rollable display according to the calculateddistance.
 6. The image display apparatus according to claim 1, whereinif pairing performed between with a first mobile terminal and the imagedisplay apparatus, the controller is configured to a height of therollable display to be a first height, and wherein if pairing performedbetween with a second mobile terminal and the image display apparatus,the controller is configured to the height of the rollable display to bea second height greater than the first height.
 7. The image displayapparatus according to claim 1, wherein in state that pairing performedbetween with a first mobile terminal and the image display apparatus,the controller is configured to change a height of the rollable displaybased on an amount of content to be displayed on the first mobileterminal.
 8. The image display apparatus according to claim 1, furthercomprising: a user input interface unit configured to receive a remotecontroller signal from the remote controller, wherein the controller isconfigured to calculate a distance according to a strength of a signalfrom the remote controller or the mobile terminal, and change a heightof the rollable display according to the calculated distance.
 9. Theimage display apparatus according to claim 1, wherein the controller isconfigured to: control the rollable display to be rolled up or down tohave a first height for displaying a first object indicating a voicerecognition mode, while the rollable display has the first height,display a second object indicating which voice recognition is beingperformed based on a voice input, when the voice input includes a searchcommand, perform a search based on the voice input, and control therollable display to be rolled up to have a second height higher than thefirst height for displaying a search result, while the rollable displayhas the second height, display a search result image including thesearch result, and wherein the search result image includes a firstsearch result data and a second search result data which is partiallydisplayed below the first search result data.
 10. The image displayapparatus according to claim 1, wherein the controller displays thesecond type of the content different from the first type of the contentwhile changing the size of the rollable display to display the firsttype of content.
 11. The image display apparatus according to claim 1,wherein when the first display command is a broadcast image displaycommand, the controller displays an application list on the rollabledisplay while controlling the drive unit to roll up the rollable displayto the first size to display a broadcast image.
 12. The image displayapparatus according to claim 1, further comprising: a user inputinterface unit configured to receive a remote controller signal from aremote controller, wherein the controller displays an application liston the rollable display when a size of the rollable display is a thirdheight, and wherein when an item is selected in the application list bya pointer displayed according to movement of the remote controller, thecontroller controls the drive unit to roll up the rollable display tohave a fourth height greater than the third height in order to displayan image of a selected application.
 13. The image display apparatusaccording to claim 1, further comprising: an audio output unit, whereinthe controller increases a volume of sound output via the audio outputunit corresponding to the first type of content in proportion to anincrease in a height of the rollable display.
 14. The image displayapparatus according to claim 1, wherein the controller increases abrightness of the first type of content in proportion to an increase ina height of the rollable display.
 15. The image display apparatusaccording to claim 1, further comprising: an audio output unit, wherein,in order to display a broadcast image, the controller outputs a firstsound via the audio output unit corresponding to the broadcast imagewhile controlling the drive unit to roll up the rollable display andoutputs a second sound via the audio output unit corresponding to abroadcast image to be displayed when rolling up of the display iscompleted, and wherein a volume of the second sound is higher than avolume of the first sound.
 16. The image display apparatus according toclaim 1, wherein when user information is received from the mobileterminal, the controller displays recommended content or preferredcontent on the rollable display according to the user information andcontrols the drive unit to roll up or down the rollable displayaccording to the recommended content or the preferred content.
 17. Theimage display apparatus according to claim 1, further comprising: a userinput interface unit configured to receive a remote controller signalfrom the remote controller, wherein, when a signal is received from theremote controller, the controller controls the drive unit to roll up therollable display.
 18. The image display apparatus according to claim 1,further comprising: a user input interface unit configured to receive aremote controller signal from the remote controller, wherein thecontroller displays a pointer on the rollable display when a height ofthe rollable display is a first height, and controls the drive unit tochange the height of the rollable display to a second height greaterthan the third height according to movement of a pointing signal fromthe remote controller.
 19. The image display apparatus according toclaim 1, wherein the drive unit is included in a casing and comprises: aroller on which the rollable display is wound; and a motor to rotate theroller, and wherein the controller controls the drive unit to roll therollable display on the roller such that the rollable display is notexposed outside of the casing in a standby mode.
 20. The image displayapparatus according to claim 1, wherein the controller is configured to:in response to a first display command to display a first type ofcontent, control the drive unit to roll up the rollable display to afirst size based on the first type of the content, and in response to asecond display command to display a second type of content, control thedrive unit to roll up the rollable display to a second size based on thesecond type of the content.